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.G, W. PRESTON. STOCK FOR SURFACE GAGES 0B. OTHER IMPLBMBNTS. No.498,726.

Patented May 30,1893

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UNITED STATES PATENT OFFICE.-

CHARLES W. PRESTON, SAN FRANCISCO, CALIFORNIA, ASSIGNOR OF ONE-HALF TOWILLIAM C. ESPEY vAI\TDWVALTER E. ANDERSON, OF

SAME PLACE.

STOCK FOR SURFACE-GAGES OR OTHER IMPLEMENTS.

SPECIFICATION forming part of Letters Patent No. 498,726, dated May 30,1893. Application filed April 7, 1892. Serial No. 428,243. (No model.)

To all whom t may concern:

Be it known that I, CHARLES W. PRESTON, a citizen ot' the United States,residing in the city and county of San Francisco and State ofCalifornia, have made certain new and useful Improvements in CombinationImplements; and I hereby declare the following speciication and thedrawings therewith and forming a part of the same to be a full, clear,

1o and exact description of my invention.

My invention relates to an implement or implements composed of a numberof elements or mechanical parts that may be combined and connected byarrangement and adjustment so as to perform a great variety of dierentfunctions such as are required in testing, adjusting and laying outmechanical Work of various sorts, the object of the invention being toprovide a simple and convenzoV ient device which may be useful for manypurposes and which consists in the construction, arrangement andcombination `of the several parts, substantially as will be hereinafterdescribed and then more particularly pointed 2 5 out in the appendedclaims.

In the accompanying drawings illustrating my invention: Figure lis aplan view ot my improved combination implement, showing the graduatedbar held removably at one end 3o of the main stock by means of theadjustable socket there located. Fig. 2 is a reverse plan view showingthe graduated bar supported adjustably near the other end of the mainstock. Fig. 3 is likewise a plan view showing the same side ot' the mainstock as that represented in Fig. l, but said stock occupying adifferent position and showing the graduated bar connected centrally tothe main stock and carrying at its other end a tool- 4o holding clamp.Fig. et is a longitudinal section on the line x a: of Fig. 3.

Similar letters of reference designate corresponding parts throughoutall the different figures of the drawings.

F designates a bar of rectangular form, its sides being parallel andstraight and one or more of them being graduated or provided with asuitable scale of lengths to enable the bar to be easily adjusted andplaced in use,

and it is, whenever practicable, set so that its corners will come incontact with the Work, thus giving a clear line of light in setting. Thegraduated rectangular bar F is provided at the ends with rounded screwsQ which are employed for fastening the gage knife or marker R inplace-see Fig. l-and also for protecting the ends of the scale bar frominjury when it is in use for various purposes.

M denotes the main stock or base of the combination implement. It may beof suitable size and its shape may vary considerably. Its edge A is madebroad and Iiat so that it can be adapted for setting upon a Hat or planesurface; The edge B is at right angles to the flat face A. The edge B2which is parallel and opposite to the edge B is elongated and providedwith a V-shaped groove running from end to end which is designed toreceive loosely at vcertain times, the scale bar F. p

D and D2 designate spirit levels of the ordinary kind. They are used forthe purpose of determining the Vertical and horizontal positions of themain stock. The level D is a horizontal level, being parallel to theflat side A and being used for the purpose of determining the truehorizontal position of the main stock when the implement is in actualuse. The level D2 is preferably located near the V-grooved edge B2 andis a vertical level, being used for the purpose of locating the mainstock with the edge B2 in a proper vertical position when the device isin actual use. The exact location of these levels may of course vary andI do not wish to be restricted to placing them at the precise pointsshown in thevdrawings.

The main stock M is so constructed that the scale beam F may beadjustable thereto at three different points, to wit: at the groovededge B2, at a point near the straight edge B', and in the slottedportion substantially midway between the two edges B and B2. At each ofthese points, provision is made for inserting and holding therectangular graduated bar F.

E designates the central mortise which is cut parallel to the edges Band B2. This mortise receives the bar F and it can be adjustedlengthwise therethrough so as to occupy any desired position. The bar Fis held in place by means of a horizontal set screw H.

' The stock M is provided with a pointer or index I which projectsalongside of the mortise E into proximity to the scale bar F so that itmay point out any mark on the graduated side of the scale bar which maybe in proximity to it. The mortise E is clearly shown in Figs. l, 2 and4:, in which figures it is unoccupied by the scale bar F, but in Fig. 3said beam is shown in position in the m'ortise E', being held there bythe set screw H. Vhen the scale bar is located in the V-grooved edge B2,it will be held in any desired position by means of the clamp E2, havingthe clamping points et a and operated by the thumb screw G. By looseningthis thumb screw the bar F may be loosened so that it can be slid ineither direction for the purpose of adjustment so as to meet therequirements as set forth in the desired combinations which thearrangement of the different parts of the tool may be desired to effect.By tightening the thumb screw G, the bar F maybe held rigidly within thegrooved edge B2. This edge B2 is provided. with a pointer or index I2for the purpose of pointing out the graduations upon the graduated barF.

Adjacent to the edge B is the third seat for mounting or connecting thescale bar F to the main stock M, said seat consisting of the metallicstrap E3, carried by the eyebolt or screw .I having thereon a thumb nutK, by means of which the seat E3 can be loosened or tightened. The scatE3 is located on a revolving or adjustable block L graduated on theperiphery at X so as to indicate the angle at which the bar F may bestanding with reference to the faces A and B in the usual manner ofsuchadjustments. The revolving block L is shaped as shown in Fig. 3, with achannel to receive the bar F which tits therein as illustrated in Fig.2. When the bar F has been set to the desired angular position, it isfastened by means of the thumb nut K, which nut at the same time fastensthe revolving block L tightly against the side of the main stock M, asclearly shown in the sectional view of Fig. 4. Supposing for instancethat the bar F is supported in the seat E2 as depicted in Fig. 2, itwill be evident that by loosening the thumb screw K, the revolving blockL can be rotated so as to bring the scale bar F into any desired angularposition, either to the right or to the left of thelocation shown inFig. 2 and that when thus adjusted it will be securely clamped by aneasy manipulation of the nut K.

On the scale bar F is a sliding clamp S made to tit neatly on the barand having a suitable mortise through which the bar passes, said barbeing held by means of the set nut T. On this sliding piece S is anextension which is tted with an eyebolt J2 that receives and holds anysuitable round or square implement as Y', employed for measuring,marking or scribing in laying out or gagin g various kinds of work.

It will be evident that the sliding clamp can be adjusted back and forthso as to occupy any desired position upon the scale bar F. It is alsoevident that the tool Y or any similar tool can be fixed in any desiredposition by adjusting the eyebolt J2 which carries it. This bolt J2 ispreferably set oblique to the faces of the bar F so that the tools heldtherein can be revolved about the axis of the screw without interferingwith the bar F or other parts of the assembled implements used inconnection therewith.

The scribing or marking tool Y requires no specific explanation as it iswell known to those skilled in mechanical Work.

I2 designates a pointer located adjacent to the graduated periphery ofthe revolving block L for the purpose of indicating the properadjustment of said block.

With the various mechanical parts assembled into a common implement inthe manner which I have thus described and shown, it will be evident tothose skilled in the art that many valuable results in practical use maybe gained and that a multiplication of diverse usage may be secured bythe re-arrangement and combination of the various adjustable parts. Itis unnecessary here to enter upon an extended description or explanationof the way in which these several elements may be re-combined andre-arranged for different kinds of work. The skilled mechanician willreadily perceive how the device is to be employed for the purposes ofgaging and scribin g in testing, adjusting and laying out mechanicalwork.

Numerous slight changes in the details of construction in the exact sizeand specific arrangement of the various parts may be made withoutdeparting from the invention and I reserve the liberty of making anysuch changes as may be required to t the device to accomplish the bestpossible results for which it is adapted.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. In a combination implement, a stock or head provided with seats atthe middle and ends thereof for receiving a scale bar, said seats beingfurnished with suitable clamping means for retaining the bar in 1anydesired longitudinal position, substantially as described.

2. In a combination implement, a stock or head provided with two seatsfor receiving a scale bar and permitting a rectilineal longitudinaladjustment of the rsame and provided also with a third seat whichpermits not only a rectilineal adjustment but also a rotary adjustmentof the scale bar, all of said seats being furnished with clamping meansfor holding the bar at any desired position of adjustment, substantiallyas specified.

IOO

IIO

3. In a combination implement, a stock or head having seats, grooves ormortises to receive a scale bar in both rigid and adjustable positionsso as to determine right angles or other angles also for various otheruses as set forth, said head'being also provided with vertical andhorizontal levels.

4. In a combination implement, the stock or head provided at its endswith clips or clamps to receive a rectangular scale bar in such positionas to present a corner of the bar to work to be tested, producing thus anarrow line of contact and permitting a clear line of light between thebar thus angularly mounted and the surface to which it is applied,substantially as specified.

5. In a combination implement, the hea provided with a centralrectangular seat for the scale bar, the V-grooved edge seat for thescale bar at one end and the rotary seat which permits the bar to have arotary as well as a longitudinal adjustment, substantially as specied.

5. In a combination implement the head or stock M, provided with thevertical and hori- .-seat and a rotary lateral seat, all of which seatsare adapted to hold the scale bar adjustably in different positions.

7. The main stock M, having the spirit levels D and D2 and the seats E',B2 and E3, substantially as described. Y

8. The main stock M, having the central rectangular seat E', providedwith the set screw H and the pointer I, the lateral rotary block Lcarrying the rectangular adjustable seat E3, having set screw and nutand the V- grooved edge seat B2 having clamp E2 with teeth a a and setscrew G, all of said seats being adapted to receive and adjustably holdthe graduated bar F, substantially as speciiied. Y

In testimony whereof I have hereunto af-A fixed my signature in thepresence of two wit- 45 Witnesses:

ALFRED A. ENQUIST, vWILSON D. BENT, J r.

